ARM: dts: suniv: f1c100s: add I2C DT nodes

The Allwinner F1C100s series of SoCs contain three I2C controllers
compatible to the ones used in other Allwinner SoCs.

Add the DT nodes describing the resources of the controllers.
At least one board connects an on-board I2C chip to PD0/PD12 (I2C0), so
include those pins already, to simplify referencing them later.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20221107005433.11079-4-andre.przywara@arm.com


Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>